September weather forecastSempy, France
September
Weather in September
September, the first month of the autumn in Sempy, is still a comfortable month, with an average temperature ranging between min 13.2°C (55.8°F) and max 18.1°C (64.6°F).Temperature
As Sempy steps into September, the average high-temperature is measured at a still enjoyable 18.1°C (64.6°F), displaying minor differences from August's 19.8°C (67.6°F). Nights in September showcase an average temperature of 13.2°C (55.8°F), slightly cooler than the daytime.Humidity
August and September, with an average relative humidity of 79%, are the least humid months.Rainfall
In Sempy, during September, the rain falls for 14.5 days and regularly aggregates up to 46mm (1.81") of precipitation. In Sempy, during the entire year, the rain falls for 191.1 days and collects up to 621mm (24.45") of precipitation.Snowfall
In Sempy, snow does not fall in April through October.Daylight
The average length of the day in September is 12h and 37min.On the first day of the month, sunrise is at 07:07 and sunset at 20:37. On the last day of September, sunrise is at 07:52 and sunset at 19:32 CEST.
Sunshine
In Sempy, the average sunshine in September is 7.1h.UV index
In Sempy, the average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for the average person.Note: A daily high UV index of 4 in September leads to these guidelines:
Be careful. Light complexion individuals might get burns in fewer than 30 minutes. The Sun is at its harshest during midday; protect yourself by staying in shaded areas and minimizing exposure. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Sempy, France
- Average high temperature in September: 18.1°C
The warmest month (with the highest average high temperature) is August (19.8°C).
The month with the lowest average high temperature is January (6.8°C).
- Average low temperature in September: 13.2°C
The month with the highest average low temperature is August (15.2°C).
The coldest months (with the lowest average low temperature) are January and February (3.7°C).
Average pressure in September
Sempy, France
- Average pressure in September: 1017.6mbar
The month with the highest atmospheric pressure is September (1017.6mbar).
The month with the lowest atmospheric pressure is November (1011.8mbar).
Average wind speed in September
Sempy, France
- Average wind speed in September: 18.2km/h
The windiest month (with the highest average wind speed) is December (25.6km/h).
The calmest months (with the lowest average wind speed) are July and August (17.2km/h).
Average humidity in September
Sempy, France
- Average humidity in September: 79%
The months with the highest relative humidity are January, November and December (84%).
The months with the lowest relative humidity are August and September (79%).
Average rainfall in September
Sempy, France
- Average rainfall in September: 46mm
The wettest month (with the highest rainfall) is December (83mm).
The driest month (with the least rainfall) is April (29mm).
Average rainfall days in September
Sempy, France
- Average rainfall days in September: 14.5 days
The month with the highest number of rainy days is November (18.5 days).
The month with the least rainy days is April (13.3 days).
Average snowfall in September
Sempy, France
- Average snowfall in September: 0mm
The month with the highest snowfall is January (17mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).
Average snowfall days in September
Sempy, France
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (2.6 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Sempy, France
- Average daylight in September: 12h and 36min
The month with the longest days is June (Average daylight: 16h and 24min).
The month with the shortest days is December (Average daylight: 8h and 6min).
- Average sunshine in September: 7h and 6min
The month with the most sunshine is June (Average sunshine: 10h and 24min).
The month with the least sunshine is November (Average sunshine: 3h and 48min).
Average sunshine days in September
Sempy, France
- Average sunshine days in September: 12.5 days
The month with the most sunshine days is April (14.3 days).
The month with the least sunshine days is November (8.5 days).
Average UV index in September
Sempy, France
- Average UV index in September: 4
The months with the highest UV index are July and August (UV index 5).
The months with the lowest UV index are January, February and November (UV index 2).
Average cloud cover in September
Sempy, France
- Average cloud cover in September: 43
The month with the most cloud cover is November (Cloud cover 62).
The months with the least cloud cover are April and August (Cloud cover 40).
Average visibility in September
Sempy, France
- Average visibility in September: 10km
The months with the highest visibility are March, April, June, July, August, September and October (10km).
The months with the lowest visibility are January, February, May, November and December (9km).
